MS-720 Exam Dumps | You have a Microsoft Teams Phone deployment. You have a PBX that connects to the PSTN by using an E1/T1

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Question 18/33

You have a Microsoft Teams Phone deployment.
You have a PBX that connects to the PSTN by using an E1/T1 Primary Rate interface (PRI).
You plan to migrate to Direct Routing by using the existing PSTN services.
What should you install upstream of the PBX?

A. a virtual Session Border Controller (SBC)

B. a Session Border Controller (SBC) in Azure

C. a physical Session Border Controller (SBC)

D. an FXO SIP Analog Telephony Adapter (ATA)

Question 18/33

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